Search Results - subject:"graphs."

First passage time interdiction in Markov chains

Daemi, Niloufar; Borrero, Juan S.; Balasundaram, Balabhaskar - In: Operations research letters : a journal of INFORMS … 54 (2024), pp. 1-7

Persistent link: https://www.econbiz.de/10015049298

Model-to-model transformation

León, Ana; Santos, Maribel Yasmina; García, Alberto; … - In: Business & information systems engineering 66 (2024) 1, pp. 85-110

Persistent link: https://www.econbiz.de/10014471743

The knapsack problem with special neighbor constraints

Goebbels, Steffen; Gurski, Frank; Komander, Dominique - In: Mathematical Methods of Operations Research 95 (2021) 1, pp. 1-34

consider two knapsack problems which contain additional constraints in the form of directed graphs whose vertex set corresponds … restricting the graph constraints to special sets of digraphs. We discuss directed co-graphs, minimal series-parallel digraphs …

Persistent link: https://www.econbiz.de/10014497553

Using mathematical graphs for questionnaire testing in large-scale surveys

Stark, Katharina; Zinn, Sabine - 2021

can represent and describe questionnaires using mathematical graphs and specify questionnaire properties in a formal and … standardised way. It also allows us deriving mathematical graphs from empirical data. We can then compare the questionnaires … (mathematical graphs) with the survey data in an automatable process. Our procedure also includes a test plan we developed for …

Persistent link: https://www.econbiz.de/10012520406

Minimax risk and uniform convergence rates for nonparametric dyadic regression

Graham, Bryan S.; Niu, Fengshi; Powell, James - 2021

Let i = 1, . . . , N index a simple random sample of units drawn from some large population. For each unit we observe the vector of regressors Xi and, for each of the N (N - 1) ordered pairs of units, an outcome Yij . The outcomes Yij and Ykl are independent if their indices are disjoint, but...

Persistent link: https://www.econbiz.de/10012621147

How COVID-19 quarantine(s) can generate poverty?

Estrada, Mario Arturo Ruiz - In: Contemporary economics 15 (2021) 3, pp. 332-338

This research paper attempts to show visually how the COVID-19 quarantines can generate massive unemployment, constant expansion of inflation, reduction of the purchasing power parity, and poverty expansion from a multidimensional perspective. This visualization is only possible by creating a...

Persistent link: https://www.econbiz.de/10012629610